* Cyclone made landfall around 0030 GMT
* Power supply, internet down
* Twitter posts show flooding, submerged cars
* Now downgraded to tropical storm
JOHANNESBURG, Jan 23 (Reuters) - The coastal city of Beira in Mozambique, which houses one of the country's most important ports, has seen mild damage to property and flooding after tropical cyclone Eloise made landfall early on Saturday, an official said in a television report.
The cyclone has since lost its strength and has been downgraded to a tropical storm, according to the World Meteorological Organisation (WMO).
"Beira had mild damage, but is too early to quantify the extent and scale of destruction," Luisa Meque, President of Mozambique's National Institute for Disaster Risk Management and Reduction (INGD), said in a television interview with national broadcaster TVM.
The South African weather department said Eloise made landfall around 2:30 a.m. in the morning with wind speeds of 160 kilometres per hour (99 mph).
Cars were submerged in water, walls of some low lying buildings collapsed and swathes of land were flooded in Beira, posts on Twitter showed.
Beira was the epicentre of damage from cyclone Idai in March 2019, which ravaged the country's second biggest city and killed more than 1,000 people across Mozambique, Malawi and Zimbabwe.
Mozambique National Institute of Meteorology (INAM) said Sofala province, which includes Beira, had seen 200 mm (8 inches) of rainfall and was likely to see another 100 mm of rain over the next 24 hours, the television channel reported.
Power supplies were shut down as the cyclone damaged power lines and uprooted some electricity poles, power utility EDM said, local digital news media A Carta reported.
"The cyclone is still in the territory of Mozambique and should make an exit at 8 p.m. today," Gorkhmaz Huseynov, head of the Mozambique delegation of the International Federation of Red Cross, told Reuters.
WMO late Friday had upgraded the storm, fuelled by the warm Indian Ocean waters of the Mozambique channel, to a tropical cyclone with strength equivalent to a Category Two storm.
Category Two strength - on a five-level scale - refers to hurricanes with maximum wind speeds of 154-177 kph.
"By tomorrow, it will be an overland tropical depression. At that time the speed will be 60 kph," Mbazhi Maliage, a forecaster at the South African Weather Service, told Reuters.
The weather department said on its official Twitter handle that more than 200mm of rainfall was expected from Saturday night to Monday in some parts of South Africa's Mpumalanga and Kwa-Zulu Natal provinces and in the southern African kingdom of eSwatini.
(Reporting by Promit Mukherjee in Johannesburg and Manuel Mucari in Maputo; Editing by Jason Neely and Alex Richardson)
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